[PATCH 1/2] drm/sched: add drm_sched_prealloc_dependency_slots

[Danilo Krummrich]

On Tue, Mar 18, 2025 at 01:03:12PM +0100, Christian König wrote:
>  /**
>   * drm_sched_job_add_dependency - adds the fence as a job dependency
>   * @job: scheduler job to add the dependencies to
> @@ -878,10 +910,12 @@ int drm_sched_job_add_dependency(struct drm_sched_job *job,
>  	 * engines involved, rather than the number of BOs.
>  	 */
>  	xa_for_each(&job->dependencies, index, entry) {
> -		if (entry->context != fence->context)
> +		bool signaled = dma_fence_is_signaled(entry);
> +
> +		if (!signaled && entry->context != fence->context)
>  			continue;
>  
> -		if (dma_fence_is_later(fence, entry)) {
> +		if (signaled || dma_fence_is_later(fence, entry)) {
>  			dma_fence_put(entry);
>  			xa_store(&job->dependencies, index, fence, GFP_KERNEL);
>  		} else {
> @@ -890,7 +924,8 @@ int drm_sched_job_add_dependency(struct drm_sched_job *job,
>  		return 0;
>  	}
>  
> -	ret = xa_alloc(&job->dependencies, &id, fence, xa_limit_32b, GFP_KERNEL);
> +	ret = xa_alloc(&job->dependencies, &id, fence, xa_limit_32b,
> +		       GFP_KERNEL);
>  	if (ret != 0)
>  		dma_fence_put(fence);

Those changes seem unrelated, aren't they?